CEN SFGas WG

pre-normative study

on gas quality parameters

Brussels, 16/11/2016

ENTSOG workshop

Current situation

29th MF – Conclusion on GQ (10/2016)

2

European H-gas quality harmonisation

CEN approach

3

1. Pre-normative phase in a common WG of the CEN

Sector Forum Gas (Infrastructure and Utilization):

Fact based study on Wobbe index aspects and - if

justified and agreed in SFGas WG – on other gas quality

parameters.

2. Normative phase within CEN/TC 234 WG 11:

Revision of EN 16726:2015 on the basis of the

pre-normative study results.

European H-gas quality harmonisation

Scope of SFGas WG

4

Scope of WG : Study of impact of identified values of H-

gas quality parameters not yet or insufficiently

established in EN16726:2015 on the whole gas supply

chain on the basis of technical and fact based findings

with the purpose of supplying information and

recommendations on the parameters in question to

CEN/TC 234 in view of the future revision of EN

16726:2015.

5

SFGas WG pre-normative H-GQ Study

General structure of SFGas WG

SFGas

Infrastructure

SFGas

Utilization

WG pre-normative study

on H-gas quality

TF 1

Wobbe

index

TF 2

National/

sectorial

situations

AHG

Units/Definitions …

Chair Advisory

Group

…

DG

JRC

European Association

C

European Association

B

European Association

A

European Association

…

Chair: Kris de Wit, NBN/ARGB

Secretary: Hiltrud Schülken, DIN/DVGW

SFGas WG pre-normative H-GQ Study

Participation of stakeholders

6

AENOR (E) SIS (S)

AFNOR (F) UNI (I)

ASI (A)

[BSI (UK)]

DIN (G)

DS (DK)

ELOT (GR)

NBN (B)

NEN (NL)

NSAI (IRL)

MSZT (HU)

PKN (PL)

Afecor GIE

CECOF IFIEC

C.E.F.A.C.D. IOGP

CEFIC Marcogaz

EASEE-gas NGVA Europe

EHI

ELVHIS

ENTSOG

EURO-AIR

Euromot

EUTurbines

FARECOGAZ

Nomination by NSB: Nominations by Associations:

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Possible input of European associations in

combination with national mirror committees

European

associations CEN SFGas WG

National mirror

committees –

representing whole chain

CAG

AdG

Units/Definitions

TF 1 Wobbe

TF 2 Situations

SFGas WG pre-normative H-GQ Study

Timeline SFGas

8

• Definition Wobbe Index Scenarios (TF1: range, fluctuation and fluctuation rate, ...)

• Data enquiries (TF2: national/sectorial GQ data, …)

• Common understanding (AhG + TF 1: units and definitions

incl. safety and reliability)

• Application of cases using:

the enquired data and

data from sectorial/national studies

• Further data enquiries, if needed

• Objective analysis of the assessment results

• Deducing consensus based recommendations for

standardisation in normative phase

Preparation

phase

Evaluation

phase

EN 16726

Assessment

phase

• Revision according to CEN Rules

3rd

year

2n

d y

ear

1st

year

+

Other GQ parameters (besides WI)

SFGas WG GQS postpones the decision whether further

GQ parameter should be treated in the CEN SFGas pre-

normative study until the results of the ENTSOG study

and other relevant studies, carried out in parallel to the

ENTSOG process, are available and analized.

Furthermore, the WG agrees to focus the ressources on

the Wobbe Index aspects at the time being, as it is

expected that the same experts would be involved in the

work on other GQ parameters, too.

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CEN SFGas WG GQS – Conclusions

(1)

• Adoption • European Parliament on 20.01.2016

• Council on 12.02.2016

• Signature on 09.03.2016

• OJEU L 81 of 31.03.2016

• Entering into force on 21.04.2016

• Application from 21.04.2018

• Exceptions: • Articles 4, 19 to 35 and 42 and Annex II

apply from 21.10.2016

• Article 43(1) applies 21.03.2018

Regulation (EU) 2016/426 on appliances burning gaseous fuels (GAR)

Reference conditions (a)

As a CEN committee acknowledging the use of different reference

conditions and respecting EC mandate M/400, EN ISO 13443 and EN

16726:2015, the following reference conditions apply:

For easy comparison, all contributed data have to be delivered with

clear indication of these reference conditions. Also in case other

reference conditions are originally in the documents, the values

converted to the agreed reference conditions have to be indicated in

addition. […]

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CEN SFGas WG GQS – Conclusions

(2)

Combustion temperature 15°C (= 288,15 K)

Volume measurement temperature 15°C (= 288,15 K)

Reference pressure 1013.25 hPa (= 101,325 KPa)

Reference conditions (b)

(…) For all contributed data reference conditions have to be indicated

expressively by units in brackets, eg, . xxx [MJ/m³, 15°C/15°C] in order

to avoid any confusion in discussions and documentations.

To switch from one set of reference conditions to another, the

table given below, basing on EN ISO 13443, gives multiplying

Coefficients:

(The reference conditions have to be indicated expressively even if the

agreed ISO reference conditions (15°/15°) are used. )

15

CEN SFGas WG GQS – Conclusions

(2)

Reference temperature

(combustion volume)

25/20 to

15/15

25/0 to

15/15

0/0 to

15/15

Wobbe Index (for real gas) 1,018 5 0,948 7 0,946 1

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…in the CEN Gas Quality Study!